Global Release Identifier

Basic construction

A GRid consists of 18 alphanumerical characters (numerical digits and capital letters as defined in ISO/IEC 646:1991-IRV, which is identical to ASCII) that are grouped into four elements as follows:

Identifier Scheme element (2 characters)

“A1” denotes a GRid.

Issuer Code element (5 characters)

A unique identifier of the organisation responsible for allocating the GRid, issued by the International GRid Authority (i.e., the IFPI).

Release Number element (10 characters)

Uniquely identifies the specific bundle of digital resources compiled by the issuer, where “a digital resource is a digital fixation of an expression of an abstract work, such as a sound recording, an audio-visual recording, a photograph, software, a graphic image or a passage of text.”

Check Character element (1 character)

The check character is computed according to ISO 7064:1983 Mod 37, 36.

When a GRid is written, printed or otherwise visually presented, the four elements of the GRid should be separated from each other by a hyphen. For clarity, it can also be prefixed with “GRid:”. Neither the hyphens nor the “GRid:”-prefix form part of the GRid. It is recommended that when a GRid is visually presented, the font used should clearly distinguish between the digits ‘1’ and ‘0’ on the one hand, and the letters ‘I’ and ‘O’ on the other hand.

The following character strings all denote the same GRid:

A12425GABC1234002M

A1-2425G-ABC1234002-M

GRid:A1-2425G-ABC1234002-M

Where:

A1 – Identifier Scheme element

2425G – Issuer Code element

ABC1234002 – Release Number element

M – Check Character element